Harpy

Filthy birds with the head and breasts of old hags. Both their deadly claws and beautiful song are known to ensorcell people.

The Island Party, sans Wirshin and Wong who were stoned at the time, were totally routed by a group of them on the Greek Islands.

The Danger Gang encountered one on the isle of Samothrace, and it would club them with a big old femur as well as raking them with it's claws. It kidnapped their fightingest cohort Xenon, leaving everyone kind of up shit's creek. Xenon may now be the father of a young Harpy, or so he claims.